Trillium Rail Partners: Eglinton Crosstown West Extension – Toronto’s Rail Infrastructure

Trillium Rail Partners awarded contract for Toronto’s Eglinton Crosstown West Extension SRS package. Design-build model initiates key construction phase.

Trillium Rail Partners: Eglinton Crosstown West Extension – Toronto’s Rail Infrastructure
September 7, 2025 8:45 pm
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Introduction

Infrastructure Ontario and Metrolinx have chosen Trillium Rail Partners to handle the stations, rail, and systems (SRS) package for the Eglinton Crosstown West Extension in Toronto. The team has entered into a development and master construction agreement with Metrolinx.

Project Team Selection

The Trillium Rail Partners team includes:

  • Kiewit
  • Alstom
  • Transdev

The selection of Trillium Rail Partners followed an evaluation of proposals. This selection is the outcome of a procurement process.

Development and Construction Agreement

The development and master construction agreement (DMCA) initiates the development phase, which is part of a progressive design-build procurement model. This agreement allows Trillium Rail Partners to start early construction activities and work with Metrolinx to refine the design scope, risk allocation, and pricing during the development phase.

Scope of Work

The stations, rail, and systems package involves the design and construction of seven stations. It also includes the installation of rail and systems for the 9.2-km extension. Additionally, the project includes works at the existing Mount Dennis Station to connect the ECWE with the future Line 5 Eglinton LRT service.

Procurement Strategy

The overall Eglinton Crosstown West Extension project utilizes a combination of procurement methods, including Public-Private-Partnership (P3), progressive design-build, and traditional contracts.

In 2024, a consortium was awarded a USD 185 million (CAD 255 million) contract for the design, construction, and financing of the second underground segment of the Eglinton Crosstown West extension, including a 500-metre long tunnel.

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Conclusion

Trillium Rail Partners will deliver the stations, rail, and systems package for the Eglinton Crosstown West Extension. The project includes seven stations and a 9.2-km extension, with a mix of procurement methods.

Company Summary

Infrastructure Ontario: No information available in the source.

Metrolinx: No information available in the source.

Trillium Rail Partners: No information available in the source.

Kiewit: No information available in the source.

Alstom: No information available in the source.

Transdev: No information available in the source.

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